Implement JsonSerializable interface in Enumeration class

Author: golonix

composer.json

@@ -13,6 +13,7 @@
     ],
     "require": {
         "php": "^7.4|^8.0",
+        "ext-json": "*",
         "ext-mbstring": "*"
     },
     "require-dev": {

src/Enumeration.php

@@ -4,9 +4,10 @@
 
 namespace DeSmart\Enum;
 
+use JsonSerializable;
 use function DeSmart\Enum\Helpers\toConstName;
 
-abstract class Enumeration
+abstract class Enumeration implements JsonSerializable
 {
     /**
      * @var int|string
@@ -77,6 +78,14 @@ public function __toString(): string
         return (string) $this->getValue();
     }
 
+    /**
+     * @return int|string
+     */
+    public function jsonSerialize()
+    {
+        return $this->value;
+    }
+    
     public function equals(Enumeration $other): bool
     {
         if (! $other instanceof static) {